5W40 instead of 10W40? - SV650.org

05-02-11, 11:41 AM

I know there will be a post on this somewhere so please excuse me... I'm on my phone and the search feature is rubbish!

I went and bought some oil from Halfords this morning, knowing to get 10w-40 and when I got home I for some reason picked up 5w-40... My question is, is it alright to use this? Or better to take it back and get the right stuff?

Cheers!

Biker Biggles · 05-02-11, 11:45 AM

Take it back and get the right stuff.Make sure what you get is motorcycle oil and not car oil and its the right viscosity.

05-02-11, 04:43 PM

Providing that it is a motorcycle oil, I'd have no issue with it. That 5W cold rating doesn't make the oil somehow thinner or the wrong grade. It's still a 40W that'll just flow a bit quicker cold meaning oil to the journals and cams faster. Very clever people spend a lot of time attempting to improve oils in this way.

Biker Biggles · 05-02-11, 05:26 PM

I could be wrong but I didnt think Halfords did anything but their standard semi synthetic motorbike oil,hence my assumption that the OP has bought something else.There again I havnt bought oil from them for a couple of years

05-02-11, 07:37 PM

Took it back to Halfords and they had none... eBay it is!

timwilky · 05-02-11, 08:04 PM

Halford's full synth is a 5W/40. Overkill to put a full synth in a SV. But it wouldn't do any harm.

05-02-11, 11:23 PM

I put full synth in my track SV and its never suffered from it.

Tbh I dont believe their is a difference between bike and car oil anymore.

Most oils these days have the same additives in.

The bike only stuff had an additive to prevent clutch drag but this is in the car stuff too now.

johnnyrod · 07-02-11, 04:02 PM

I don't think the film strength of 5W/40 is up to the pounding a twin can give the crank. I wouldn't do it.

NedSVS · 08-02-11, 08:46 PM

Quote:

Originally Posted by hardhat_harry

Tbh I dont believe their is a difference between bike and car oil anymore.

Most oils these days have the same additives in.

The bike only stuff had an additive to prevent clutch drag but this is in the car stuff too now.

Ive read that car oils have addatives that are not suitable for the wet clutches found on most motorcyles and may cause clutch slippage.

08-02-11, 08:53 PM

All I can tell u what my Bike and Car Mechanic friend said and he has been in the game over 20 years I'd rather trust him.

05-02-11, 11:41 AM	#1
Stuuk1 Guest Posts: n/a	5W40 instead of 10W40? I know there will be a post on this somewhere so please excuse me... I'm on my phone and the search feature is rubbish! I went and bought some oil from Halfords this morning, knowing to get 10w-40 and when I got home I for some reason picked up 5w-40... My question is, is it alright to use this? Or better to take it back and get the right stuff? Cheers!

05-02-11, 11:45 AM	#2
Biker Biggles Member Mega Poster Join Date: Jan 2005 Location: Barnet Herts Posts: 5,071	Re: Oil... Take it back and get the right stuff.Make sure what you get is motorcycle oil and not car oil and its the right viscosity. __________________ On a clear day we stand there and look further than the ordinary eye can see.

05-02-11, 04:43 PM	#3
MattCollins Guest Posts: n/a	Re: Oil... Providing that it is a motorcycle oil, I'd have no issue with it. That 5W cold rating doesn't make the oil somehow thinner or the wrong grade. It's still a 40W that'll just flow a bit quicker cold meaning oil to the journals and cams faster. Very clever people spend a lot of time attempting to improve oils in this way.

05-02-11, 05:26 PM	#4
Biker Biggles Member Mega Poster Join Date: Jan 2005 Location: Barnet Herts Posts: 5,071	Re: Oil... I could be wrong but I didnt think Halfords did anything but their standard semi synthetic motorbike oil,hence my assumption that the OP has bought something else.There again I havnt bought oil from them for a couple of years __________________ On a clear day we stand there and look further than the ordinary eye can see.

05-02-11, 08:04 PM	#6
timwilky Member Mega Poster Join Date: Mar 2004 Location: Not in Yorkshire. (Thank God) Posts: 4,116	Re: Oil... Halford's full synth is a 5W/40. Overkill to put a full synth in a SV. But it wouldn't do any harm. __________________ Not Grumpy, opinionated.

05-02-11, 07:37 PM	#5
Stuuk1 Guest Posts: n/a	Took it back to Halfords and they had none... eBay it is!

05-02-11, 11:23 PM	#7
hardhat_harry Guest Posts: n/a	Re: Oil... I put full synth in my track SV and its never suffered from it. Tbh I dont believe their is a difference between bike and car oil anymore. Most oils these days have the same additives in. The bike only stuff had an additive to prevent clutch drag but this is in the car stuff too now.

07-02-11, 04:02 PM	#8
johnnyrod Member Mega Poster Join Date: Jul 2003 Location: Doncaster, oop norf Posts: 2,128	Re: 5W40 instead of 10W40? I don't think the film strength of 5W/40 is up to the pounding a twin can give the crank. I wouldn't do it.

08-02-11, 08:53 PM	#10
hardhat_harry Guest Posts: n/a	Re: 5W40 instead of 10W40? All I can tell u what my Bike and Car Mechanic friend said and he has been in the game over 20 years I'd rather trust him.

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